package com.atguigu.gulimall.order.service.impl;

import com.atguigu.gulimall.order.entity.OrderEntity;
import com.atguigu.gulimall.order.entity.OrderReturnReasonEntity;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.order.dao.OrderItemDao;
import com.atguigu.gulimall.order.entity.OrderItemEntity;
import com.atguigu.gulimall.order.service.OrderItemService;


@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues：声明需要监听的所有队列
     *
     * class org.springframework.amqp.core.Message
     *
     * 参数可以写一下类型
     * 1、Message message：原生消息详细信息。头+体
     * 2、T<发送的消息的类型> OrderReturnReasonEntity content
     * 3、Channel channel：当前传播数据的通道
     *
     * Queue：可以很多人来监听。只要收到消息，队列就会删除消息。而且智能有一个收到此消息
     * 场景：
     *  1）、订单服务启动多个;同一个消息，只能有一个客户端收到
     *  2）、只有一个消息完全处理完，方法运行结束，我们就可以接收到下一个消息
     *
     */
//    @RabbitListener(queues = {"hello-java-queue"})
    @RabbitHandler
    public void recieveMessage(Message message, OrderReturnReasonEntity content, Channel channel) throws InterruptedException {

        System.out.println("接收到消息...>"+content);

        // {"id":1,"name":"哈哈","sort":null,"status":null,"createTime":1720941160236}
        byte[] body = message.getBody();

        // 消息头属性信息
        // [headers={__TypeId__=com.atguigu.gulimall.order.entity.OrderReturnReasonEntity},
        // contentType=application/json, contentEncoding=UTF-8,
        // contentLength=0, receivedDeliveryMode=PERSISTENT, priority=0, redelivered=false,
        // receivedExchange=hello-java-exchange, receivedRoutingKey=hello.java, deliveryTag=1,
        // consumerTag=amq.ctag-thzLcBMT6okgJhVwJaiB_Q, consumerQueue=hello-java-queue]
        MessageProperties messageProperties = message.getMessageProperties();

//        Thread.sleep(3000);
        System.out.println("消息处理完成=>"+content.getName());
        // channer按顺序自增的
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag=>"+deliveryTag);

        // 签收获取，非批量模式
        try {
            if (deliveryTag % 2 == 0){
                // 签收消息
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了消息=>"+deliveryTag);
            }else {
                // 拒签消息 requeue=false 丢弃；requeue=true 发回服务器，重新入队列；
                // (long deliveryTag, boolean multiple, boolean requeue)
                channel.basicNack(deliveryTag,false,true);
                // (long deliveryTag, boolean requeue)
//                channel.basicReject(deliveryTag,false);
                System.out.println("没签收消息=>"+deliveryTag);
            }

        } catch (IOException e) {
            // 网络中断;
        }
    }

    @RabbitHandler
    public void recieveMessage2(OrderEntity content) throws InterruptedException {

        System.out.println("接收到消息...>"+content);

        System.out.println("消息处理完成=>"+content);
    }


}